Issue 2487 - Introduce fail2ban module

modules/fail2ban/manifests/filter.pp

 # == Type: fail2ban::filter
 #
 # Manage filter information and files for any custom filter.
 #
 # == Parameters:
 #
-# [*failregex*]
+# [*regexes*]
 #   Array of strings containing the regular expressions applied to
 #   the filter.
 #
 # [*ensure*]
 #   Translates directly into the state of the file resource.
 #
 # === Examples:
 #
-#   fail2ban::filter => {'CVE-2013-0235':
-#       failregex => [
-#         '^<HOST>.*\"WordPress\/.*',
-#         '^.*\"WordPress\/.*<HOST>.*'
-#       ],
-#       'ensure' => 'present',
+#   fail2ban::filter {'CVE-2013-0235':
+#     regexes => [
+#       '^<HOST>.*\"WordPress\/.*',
+#       '^.*\"WordPress\/.*<HOST>.*',
+#     ],
+#     'ensure' => 'present',
 #   }
+#
 define fail2ban::filter (
-  $failregex = [],
+  $regexes = [],
   $ensure = 'present',
 ) {
 
   include fail2ban
   include stdlib
 
-  if (size($failregex) == 0) and ($ensure == 'present') {
-    fail('Require an array of string[s] with the regex patterns to apply.')
+  if (size($regexes) == 0) and ($ensure == 'present') {
+    fail("An array of one or more regular expressions is needed.")
   }
 
-  file {"/etc/fail2ban/filter.d/$title.conf":
+  # The $name parameter is used to compose the file name.
+  file {"/etc/fail2ban/filter.d/$name.conf":
     ensure => $ensure,
     content => template("fail2ban/filter.erb"),
     group => 'root',
     mode => '0644',
     owner => 'root',
     require => Package['fail2ban'],
     notify => Service['fail2ban'],
   }
 }
+